Latch for awning-type windows



July 27 1926.

n J. J. DONOVAN LATCH F013 AwNING TYPE wINnows Filed June 10. 1925 INVENTOR JOHN l.DONO\/AN Bv www @Ws/Xg@ Patented July 27, 1926.

PATENT OFFICE.

JOI-IN il'. DONOVAN, 0F OAKLAND, CALFORNIA.

LATCH FOR AWNING-TYPE WINDOWS.

Application filed June 10, 1925. Serial No. 36,079.

4This invention relates to a window latch which is particularly adapted for use in con nection with so-called awning type windows such as described and claimed in a United States Letters Patent, No. 1,541,123, entitled Swinging windows, issued to mev on June 9, 1925.

In general, the window disclosed in the said patent comprises a pair of sashes mounted in a frame in offset relation to give a double hung etlect. These sashes are pivotally and slidably connected with the trame by mechanism which permits them to be operated in unison or separately.

In this type ol' Window a certain amount oit play is present in the operating mechanism, and permits a certain amount of relative movement between the windows. Due to this fact, vthe meeting` rails of the sashes do not always remain tightly in abutment, which results in rattling and other disagreeable effects.

It is the object of the present invention to provide an improved latch mechanism 'for windows of the type referred to, which will automatically latch, 0r unlatch when the sashes are operated from the interior of the building in which the window ris placed, and which will effectively latch the meeting rails of the sashes together to prevent relative movement between the sashesV and also act, to a certain extent, in preventing opening oi" the sashes 'from the exterior of the building. y

In carrying out this object, I provide a vertically pivotal keeper which is mounted on the lower rail of the upper sashl and which is adapted to engage a keeper plate ,mounted on the kadiacent rail of the lower sash. The peculiar relative movement occurring between the sashes when they are swung open automatically disengages the keeper .from the keeper plate. Likewise, when the sashes are closed, the keeper automatically becomes engaged with the plate and securely latches the sashes against opening from the exterior of the building.

`One form which the invent-ion may assume is exemplified in the following description and illustrated by way ot example in the accompanying drawings, in which:

F ig. 1 is a view in vertical section through a window frame disclosing the latch mounted on the sashes. Y

Fig. 2 is an enlarged view of the latch structure in side elevation.

Fig. 3 is a view of the same in plan.

Referring more particularly to the accompanying drawings, the latch which embodies the present invention is here shown as mounted on a window Structure which comprises a trame 10, and a pair of swinging sashes 11. These sashes as shown in Fig. 1 are oiiset with relation to each other so that the sides ci the contiguous rails 12 ot the sashes abut. The upper end of each sash is fitted with a pair of horizontal extending trunnions 14 which are slidably received in ,vertical grooves 15 formed in the faces of the jambe of the frame 10. A pair of fulcrum links 16 is pivotally connected to the sashes intermediate the ends of each sash and to the jambs. This mounting of the sashes permits opening thereof by merely pushing outwardly on their lower ends.

Tn order that the sashes may be operated in unison, the trunnions of the sashes are connected by a connecting bar 17. This bar may be detachably connected with the trunnion ot either sash `and operated to discon- -nect the sashes in order that they vmay be operated separately. This, however, does not form a part of the present invention, it is merely shown and described so that the operation of the latch with which the present application is more particularly concerned may be more fully understood.

It is seen that to open the sashes it is only necessary to push outwardly on the lower end of the lower sash. This causes the lower ends of Vthe sash to swing outwardly and the upper ends of the sash to travel downwardly in a straight path due to the provisionof the trunnions and the vertical grooves in which they are slidably mounted. This peculiar movement ci the sash is utilized to automatically unlatch and latch the latch mechanism, generally indicated at 18, when the windows are opened and closed.

The latch mechanism comprises a substantially U-shaped clip 19 which is disposed vertically and which is formed with toe flanges 2() by which it may be secured to the upper surfaces or the lower rail of the upper sash interiorly of the pane. A keeper 21 is provided, the outer end of which eX- tends between the sides of the clip 19 and which is pivotally connected thereto by a horizontally disposed pivot pin 21a. This pin is secured at its ends in the sides of the clip 19. This mounting ol' the keeper pernits it to oscillate vertically.

To limit the downward movement of the keeper, its inner end is provided with a lug 22 which is adapted to abut again'stthe oiiter end of the clip 19. The inner end of the keeper 21 is hookedl so' that'` it mayv engage a keeper plate 23 which is seelired' on the upper race'of the top" rail-of the lower' sash, which is disposed' ll'us'h of the top surface ol' the' lower rail of the upper sash when the' windows are closed.v This keeper plate may' be' secured inv place with screws.

Thel keeper 21 is normally held engaged with the' keeper plate Z3 by arrY expansion spring 211 whieh'is inserted in a' recess formed in the keeper andv interposed between the latter andthe top olthe' Ushaped Clip'19'.

In operation of the latch, when the lower end of the lower sasli is'moied outwardly its upper end simultaneously moves downwardly' and moves out of engagement with the keeper 21. Thisis also truefif thefsas'h'es are moved in' unison' asthe lower endy of the upper sash swings' outwardly thev upper end oi' the lower sash moves downwardly and consequently disengagcs the'ke'epe'r' from the keeper plate.-

When' the saslies are closed the inner end of tliekee'pei" strikes a'vcamhsurfac'e" 25' on the keeper platefand rides over the latter, as' the rails or the sashes" are bronght together, unL til itshooke'd" end engagesthe inner-end of the keeper plate', Chris latching the' sashes` in position. Froni the foregoing `it isf obyious that the latch automatieally releases when the saslies are opened frein' the' interior ofjt'he building and that it automatically latches thei winldws when the latterY are elosed;

The latch willl effectively preventopening or the; windows from the' exteriori of the bnildingf becauseno purchase can be obtained ekter'iorly of the sashes'V to open them.

lVhile I' have shwn thepreferredI forniA of my invention, itv is to be understood that various changes in' its* construction and opera'- tionrn'a'y beV i'nade'by those skilled in the art without departingfroin thespirit of thev invention as' defined in the appended-claims Havinglthus described invention,` what l claim. and-desire to secure by Letters Patentis':

1. A latch for awning type windows Com'- prising latch means: carried' by vcontiguous rails or the sashes and'f adapted' to'- latcli the sametogetlier, said latch means being adapted to automatically release when the saslies are opened and to automatically latch the same together' when closed.

2. A latch for awning type windows comprising a pivotal keeper carried by the rail of one sash7 a' keeper plate carried by the adjacent rail` or the other sash and with which the keeper is adapted to engage to latch the sashes together, said keeper and keeper plate beingV adapted to automatically disengage when the sashes are opened and to automatcally engage when the sashes are closed.

3. A window latch for awning type windows comprising` a vertically pivotal keeper mounted on the rail'k or one sash, a fixed keeper plate mounted on the rail of the ad'- so jacent sash for "coloperation with the keeper, said keeper and keeper plate beingadapted toautoinat'ically engage and latch' the sashes together when the windows are'close'd' and to automatically disengage when the windows so are opened;v

45. A window latch for awning type windows' comprising a vertically pivotal keeper mounted on the rail of one sash interiorly of the pane and projecting inwardly, a keeper plate mounted' on the' rail of lthe adjacent sash for co-operation with" the keeper, a spring tending` to maintain said keeper in engagement with the keeper plate, said keeper and keeper plate being yadapted to automatically engage and latch-the sas'hes together when the windows' are closed and to automatically disengage when the windows are opened: p

5. A latch for awning type windows'com- 100 pris'ing a vertically pivotal' keeper mounted on the lower rail' oi' the'upper sash int'eriorly of thepane andprojecting inwardly, theinner end of said keeper being hooked,J a spring tending to forcefthe inner end of said keeper downwardly, a keeper plate on the top rail ol the lower sash and over which said keeper is adapted' to hook whereby when said windows are openedI said' keeper plate will automatically dis"en} `;ageV from said'ke'ep'- 110 er,-

cam' siiriiaceon the keeper plate adapted to be engaged by the inner end of the keeper when the windows are being closed to guide tlie keeper whereby it'Will automatically eilg'a'g'e with the keeper plate and latchl the 115 windows together when' the latter are closed.

6; A latch for awning type windows cmpi'isingV a U's'hap"ed clip adapted to be vertically disposed and secured on the top surface' ol the lower rail of the upper sash, a 120 keepery having its outer en'd extendingl between thesides oi the clip andpivotedithereto whereby itfinay swing vertically, theinner end of said keeper being hooked,- a springl interposed between the top oit the clip and the keeper constantly tending toforcethe inner e'ndot said keeper' downwardly, lugy on the outerend of said keeper engagedby the clip to limit the downward' inoyeinent of the inl ner end of the keeper, a keeper plate adapted to be secured to the top surface of the upper the keeper When the windows are being rail of the lower sash and over which the closed to guide the keeper into latehng enhooked end of said keeper hooks, whereby gagement with the keeper plate and thereby 10 when said Windows are opened said keeper latch the sashes together when the same are 5 plate will automatically dsengage fromsaid closed.

keeper, a cam surface on said keeper plate adapted to be engaged by the inner end of JOHN J. DONOVAN. 

